Status Report From: Space Weather Prediction Center (NOAA)
Posted: Sunday, August 1, 2021
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 213 Issued at 2200Z on 01 Aug 2021 IA. Analysis of Solar Active Regions and Activity from 31/2100Z to 01/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 0 numbered sunspot regions on the disk.
IB. Solar Activity Forecast: Solar activity is expected to be very low on days one, two, and three (02 Aug, 03 Aug, 04 Aug). IIA. Geophysical Activity Summary 31/2100Z to 01/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 431 km/s at 31/2156Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 483 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (02 Aug, 03 Aug, 04 Aug). III. Event probabilities 02 Aug-04 Aug Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 01 Aug 075 Predicted 02 Aug-04 Aug 072/072/072 90 Day Mean 01 Aug 079 V. Geomagnetic A Indices Observed Afr/Ap 31 Jul 006/005 Estimated Afr/Ap 01 Aug 004/004 Predicted Afr/Ap 02 Aug-04 Aug 005/005-006/005-005/005 VI. Geomagnetic Activity Probabilities 02 Aug-04 Aug A. Middle Latitudes Active 10/10/10 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/20/20 Major-severe storm 15/15/15
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Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 1 August 2021 - Space Ref
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